Consult the module API page at
https://engineering.purdue.edu/kak/distRPG/RegionProposalGenerator-2.1.0.html
for all information related to this module, including information related
to the latest changes to the code. The page at the URL shown above lists
all of the module functionality you can invoke in your own code.
::
Single-Instance and Multi-Instance Object Detection:
Say you wish to experiment with YOLO-like logic for multi-instance
object detection, you would need to construct an instance of the
RegionProposalGenerator class and invoke the methods shown below on
this instance:
rpg = RegionProposalGenerator(
dataroot = "./data/",
image_size = [128,128],
yolo_interval = 20,
path_saved_yolo_model = "./saved_yolo_model",
momentum = 0.9,
learning_rate = 1e-6,
epochs = 40,
batch_size = 4,
classes = ('Dr_Eval','house','watertower'),
use_gpu = True,
)
yolo = RegionProposalGenerator.YoloLikeDetector( rpg = rpg )
yolo.set_dataloaders(train=True)
yolo.set_dataloaders(test=True)
model = yolo.NetForYolo(skip_connections=True, depth=8)
model = yolo.run_code_for_training_multi_instance_detection(model, display_images=False)
yolo.run_code_for_training_multi_instance_detection(model, display_images = True)
Graph-Based Algorithms for Region Proposals:
To generate region proposals, you would need to construct an instance
of the RegionProposalGenerator class and invoke the methods shown below
on this instance:
rpg = RegionProposalGenerator(
### The first 6 options affect only the graph-based part of the algo
sigma = 1.0,
max_iterations = 40,
kay = 0.05,
image_normalization_required = True,
image_size_reduction_factor = 4,
min_size_for_graph_based_blobs = 4,
### The next 4 options affect only the Selective Search part of the algo
color_homogeneity_thresh = [20,20,20],
gray_var_thresh = 16000,
texture_homogeneity_thresh = 120,
max_num_blobs_expected = 8,
)
image_name = "images/mondrian.jpg"
segmented_graph,color_map = rpg.graph_based_segmentation(image_name)
rpg.visualize_segmentation_in_pseudocolor(segmented_graph[0], color_map, "graph_based" )
merged_blobs, color_map = rpg.selective_search_for_region_proposals( segmented_graph, image_name )
rpg.visualize_segmentation_with_mean_gray(merged_blobs, "ss_based_segmentation_in_bw" )
Raw data
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